Shame they didn't include the UK, it's Europe's biggest competitor in terms of where workers can easily move to.
Is this part still true though?
Since Brexit I've noticed that my London-based employer has had an uptick in hiring Indian and Pakistani nationals, especially in Dev and QA. It's probably not the outcome that most Brexit supporters were gunning for, although I did hear that a large proportion of South Asians did in fact vote to leave for this reason.